Give your UltraPress® a boost! Add a One-Way Valve to make it possible to add electrolytes, drink mixes and other flavored liquids into an UltraPress.

A feature no other drink-thru filter bottle can deliver, our One-Way Valve for the UltraPress® allows electrolytes and sport drink mixes to be added to clean purified water without compromising the integrity of the filter. Also allows your UltraPress to be used with a variety of flavored drinks such as juice, bubbly water, mocktails and cocktails.